Consolidate all static variables into a single struct

[gnufied]

Hello,

One of the things which I am thinking is, we have bunch of static variables which are obviously not threadsafe in face of real parallelism, but we just have them spread all over the code.

I think, we can't eliminate them - but having them in a single global static variable will help us in isolating scope of it. @emilsoman and @iffyuva what you guys think?